Function _init

packages/node/src/sdk/index.ts:71–114

* Internal initialization function.

(
  options: NodeOptions | undefined = {},
  getDefaultIntegrationsImpl: (options: Options) => Integration[],
)

 * Internal initialization function.
 */
function _init(
  options: NodeOptions | undefined = {},
  getDefaultIntegrationsImpl: (options: Options) => Integration[],
): NodeClient | undefined {
  applySdkMetadata(options, 'node');

  // EXPERIMENTAL: diagnostics-channel injection, opted into via
  // `experimentalUseDiagnosticsChannelInjection()`. Gated on span recording to
  // match the OTel integrations it replaces. With tracing off there are no
  // channel subscribers, so injecting is pointless work. `resolve...()` is
  // memoized, so `getDefaultIntegrations()` (below) sees the same instance.
  const diagnosticsChannelInjection =
    isDiagnosticsChannelInjectionEnabled() && hasSpansEnabled(options)
      ? resolveDiagnosticsChannelInjection()
      : undefined;

  // Install the channel-injection hooks as early as possible, before the app
  // imports its instrumented modules.
  if (diagnosticsChannelInjection) {
    diagnosticsChannelInjection.register();
  }

  const client = initNodeCore({
    ...options,
    // Only use Node SDK defaults if none provided
    defaultIntegrations: options.defaultIntegrations ?? getDefaultIntegrationsImpl(options),
  });

  // Add Node SDK specific OpenTelemetry setup
  if (client && !options.skipOpenTelemetrySetup) {
    initOpenTelemetry(client, {
      spanProcessors: options.openTelemetrySpanProcessors,
    });
    validateOpenTelemetrySetup();
  }

  // Warn about missing or doubled channel injection. Runs after the client
  // is created so the debug logger is enabled and the warning is emitted.
  if (diagnosticsChannelInjection) {
    diagnosticsChannelInjection.detect();
  }

  return client;
}

/**
 * Initialize Sentry for Node, without any integrations added by default.